An antisense oligonucleotide to HSP47 inhibits paraquat-induced pulmonary fibrosis in rats

被引:48
作者
Hagiwara, Satoshi [1 ]
Iwasaka, Hideo [1 ]
Matsumoto, Shigekiyo [1 ]
Noguchi, Takayuki [1 ]
机构
[1] Oita Univ, Fac Med, Dept Brain & Nerve Sci Anesthesiol, Oita 8795593, Japan
关键词
paraquat; antisense oligonucleotide; heat shock protein 47; pulmonary fibrosis;
D O I
10.1016/j.tox.2007.04.013
中图分类号
R9 [药学];
学科分类号
1007 ;
摘要
The most common cause of death from poisoning by the widely used, but highly toxic herbicide paraquat is respiratory failure from pulmonary fibrosis, which develops through pathological overproduction of extracellular matrix proteins such as the collagens. Heat shock protein (HSP47) is a collagen-specific molecular chaperone that assists in the posttranslational modifications of procollagens during collagen biosynthesis. We investigated whether treatment with an HSP47-antisense oligonucleotide would inhibit paraquatinduced pulmonary fibrosis in Wistar rats. Rats randomized into three groups (control, paraquat, and paraquat + antisense). Paraquat (20 mg/kg/day) (n = 16) or a saline control (n = 10) was administered to groups of Wistar rats. Intratracheal administration of the antisense oligonucleotide (100 nmol/kg in saline) was performed after the initial paraquat treatment (n = 16). Treatment with paraquat alone induced pulmonary fibrosis in the entire group, while treatment with the antisense oligonucleotide alone did not produce any substantial change in lung histology. Administration of antisense oligonucleotides produced a substantial reduction in paraquat-induced pulmonary fibrosis. An immunoblot analysis confirmed that the HSP47-antisense oligonucleotide inhibited HSP47 production. These findings indicate that the HSP47-antisense oligonucleotide inhibited paraquat-induced pulmonary fibrosis and pneumopathy in rats. (C) 2007 Published by Elsevier Ireland Ltd.
引用
收藏
页码:199 / 207
页数:9
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